Sulfonylurea compounds



United States Patent and to acid addition salts of such basic compounds.

A in the above formula represents the nine membered, bicyclic indan, cumaran, dihydrothionaphthene, indoline and indole ring systems. The sulfonyl moiety is attached to one of the carbon atoms of the benzene ring. B represents a basic nitrogen containing radical-of less than 12 carbon atoms;

In its preferred aspects, the invention relates to compounds having the structural formulae (II) R1 with special preference for those compounds in which the sulfonylurea moiety is attached to the ring in either the 5 or 6-position.

In Formula II, the symbol X represents CH NH, NCOR, O or S forming, respectively, theindan, indoline, N-acylindoline, cumaranand. dihydrothionaphthene bicyclic ring systems. To these, Formula III adds the indole ring system; In both FormulasII and III, R and R each represents lower alkyl, e.g. straight and branched chain saturated aliphatic groups, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-btltyl, amyl, isoarnyl, hexyl and the like, hydroxy-lower alkyl and phenyl-lower alkyl. R in the structure NCO--R is lower alkyl, e.g. straight and branched chain saturated aliphatic groups such as methyl, ethyl, propyl, isopropyl, isoamyl, hexyl and the like.

The radical thus includes such basic groups as diloweralkylamino, e.g. dimethylamino, diethylam ino, dipropylamino, di(hydroxylower alkyl)amino, e.g. di-(hydroxyethyl)amino, and benzyl methylamino and the like. Furthermore the nitrogen may join with the groups represented'by R and R to form a 5 to 7-membered monocyclic heterocyclic containing, if desired, an oxygen, sulfur or an additional nitro gen atom that is, the symbols R and R represent together a tetramethylene, pentamethylene, hexarnethylene, oxatetramethylene, oxapentamethylene, oxahex-ameth'ylene, azatetramethylene, azapentamethylene azahexamethylene, thiatetramethylene, thiapentamethyl ene or ,thiahexamethylene chain. The heterocyclic group may also be substituted by one or two of the following: lower alkyl, lower alkoxy, nitro or halo.

7 Thus the heterocyclic groups represented by the radical IV include, for example, piperidino; (lower alkyDpiperi-f dino, e.g. methyipiperidino; di(lower alkyl)piperidin0, e.g.

Patented Aug 27, 19%? dimethylpiperidinoj (lower alkoxy)piperid ino, e.g. meth oxypiperidino; pyrrolidino; (lower alkyl)pyrrolidino, e.g.

methylpyrrolidino; di(lower alkyl)pyrrolidino, e.g. dimethylpyrrolidinog (lower alkoxy)pyrrolidino, e.g. ethoxypyrrolidino; morpholino; (lower alkyl)mo-rpholino, e.g. 2-

. methylmorpholino; di(-lo wer alkyDmorpholino, e.g. 2,3-dimethylmorpholino; (lower alkoxy)morpholino, e.g. ethoxymorpholino, thiamorpholino; (lower alkyl)-thiamorpholino, e.g. Z-metliylthiamorpholino; di(lower alkyl) thiamorpholino, e.g. 2,3-dimethylthiamorpholino; (lower alkoxy)thiamorpholino, e.g. 2 methoxythiarnorpholino; piperaziuo; (lower :alkyDpiperazino, e.g. N -methylpiperazino and Z-methylpiperazino; di(lower alkyl)piperazino,

' e.g. 2,3-dimethylpiperazino; (lower alkoxy)piperazino, e.g.

Z-methoxypiperazino; hexamethyleneimino; homopiperk azino; homomorpholino, pyiidazino; pyrimidine; (lower alkyl)pyrimidino, e.g. isopropylpyrimidino and the like.

The bases of Formula I form acid' addition salts with the common inorganic and organic acids.

ride, hydroiodide, sulfates, nitrates, phosphates, borates, etc., and organic salts as acetate, oxalate, tartrate, malate, citrate, succinate, benzoate, ascorbat'e, salicyla-te, theophyllinate, camphorsulfonate, alkanesulfonate, e.g. methanesulfonate, benzenesul-fonate, toluenesulfonate and the like are also within the scope of the invention.

The compounds of this invention maybe produced by Q several methods. 'According to one method, sulfonylcar-g bamic acid estersof the formula 'A so NH coo-a1k 1{ are reacted with basic compounds of the formula B-NH to form the desired sulfonylurea derivatives. :In place of the sulfony-lcarbamic acid esterscyanates of the formula or their acyl derivatives and sulfonylcarbamic acid halide BNCO A and B in the above formulas have the same meaning as defined above. Instead of the isocyanate, other compoundswhich behave in the same manner as the isocyanate under such conditions, may also be used.

In addition, the sulfonamides or the alkali metal salts,

described above, will react with appropriately substituted derivatives of carbonic acids. Particularly useful derivatives of carbonic acids are carbamic acid esters of the formula f B-NH-COO-alkyl I carbamic acid chlorides of the formula BNH-CO hal wherein hal is a halogen, preferably chlorine, or a mono acyl urea of the formula B'NHCO-NH-acyl wherein B has the same significance described above and acyl represents the acid radical of a hydrocarbon carawaits Suchinorg'anic I salts as the hydrohalides, e.g. hydrobromide, hydrochloone may use sulfonylisoboxylic acid of less than ten carbon atoms, preferably acetic acid.

Thus for example S-indansu-lfonyl isocyanate will react with N-aminopiperidine, preferably in an inert solvent, to yield the desired product.

hexamethyleneimine. Still another example is the reaction of indolinesulfonyl urea with N-aminopyrrolidine. In addition, S-indansulfonylcarbamic. acid chloride reacts with N-aminohexylmethyleneimine in the presence of an acid binding agent.

According to another approach, a sulfonylthiourea of the formula or a sulfonylguanidine of the formula A-SOa-NHONHB is first produced and this is converted to the desired product of Formula. Iv by splitting off hydrogen sulfide or ammonia, as the case may be, under hydrolytic conditions.

Similarly, the compounds of Formula I may also be producedtrorn sulfonic acid halides of the formula A-SO -ha1 by reaction with an isourea alkyl ether of the formula O-alkyl NH=CNHB and s apo hifying the intermediate obtained to produce the desired sulfonyl urea.

The acid addition salts are formed by reaction of the base with an excess of the appropriate acid.

The compounds of this invention are hypoglycemic agents which are effective in lowering blood sugar content in mammals. They are particularly noteworthy in their long duration of action. The compounds of Formula I or physiologically acceptable acid addition salts thereof may be administered orally in conventional dosage forms such as tablets, capsules and the like, prepared according to conventional practice.

The following examples are illustrative of the invention. All melting points are expressed in degrees centigrade (uncorrected).

EXAMPLE 1 1-(5-Indansulfonyl) -3-(I-Hexahydraazepinyl) -Urea (A) PREPARATION OF N-NITROSOHEXAMETHYLENE- IMINE A solution of 50 grams ofhexamethyleneimine in 51 ml. of N hydrochloric acid is heated to 70 C. on a steam bath. To this solution there is added dropwise, with vigorous stirring, a solution of 35 grams of sodium nitrite in 50 ml. of water. The reaction mixture is kept at 70-75 for two hours after the addition is completed and is then cooled. The organic phase is separated from the reaction mixture and the aqueous solution extracted with ether. The organic phase is then combined with the ether extract and dried over anhydrous magnesium sulfate. The ether solution is then filtered, concentrated to remove thesolvent, and then distilled under reduced pressure to yield the N-nitrosohexamethyleneimine as a yellow oil, boiling at 125-130" at 30 mm.

(B) PREPARATION OF N-AMINOHEXAMETHYLENE- IMINE To a mixture of 13 grams. of lithium aluminum hydride .and 500 ml. of anhydrous ether, there is added slowly with vigorous stirring a solution of 43 grams of N-nitrosohexamethyleneimine in 100 .ml. of anhydrous ether. The rate of addition is controlled so that gentle reflux of the reaction mixture is maintained. After the. addition of the nitroso compound is complete, the reaction mixture As another example, 7 ethyl-64:11maransulfonylcarbamate reacts with N-aminois refluxed for two hours on a steam hath and then cooled in an ice-bath. There is added dropwise to the cooled, well-stirred reaction mixture 50 m1. of water. The addition of the water is regulated so that the exothermic reaction is completed before additional water is added. There is then added slowly to the reaction mixture 10 ml. of 20% aqueous sodium hydroxide solution.

The organic phase is separated and the inorganic solid removed from the aqueous phase by filtration. The inorganic solid is washed twice with ether and the aqueous phase extracted three times with ether. The organic phase is combined with the ether extracts, dried over anhydrous magnesium sulfate and filtered. The filtrate is concentrated to remove the ether and the residue fractionally distilled to yield the desired N-aminohexamethyleneimine as a colorless oil.

(C) PREPARATION OF 1-(5-INDANSULFONYL)-3- (l-HEXAHYDROAZEPINYL) UREA 24 grams of ethyl S-indansulfonyl carbamate are triturated with 11.6 grams of N-arninohexamethyleneimine. Upon warming, salt formation occurs. The mixture is then warmed on a boiling water bath until a homogeneous syrup results. The syrup is then heated for an additional 30 minutes under water vacuum. The solidified residue is cooled, triturated with a little water, filtered under suction, washed with water and dried. There are obtained 26.9 grams of l-(5-indansulfonyl)-3-(l-hexahydroazepinyl) urea which is recrystallized from methanol, M.P. 169-170.

EXAMPLE 2 1-(S-Indansulfonyl)-3-(1-Piperidyl) Urea By reacting 24 grams of ethyl S-iudansulfonylcarbamate with 10.0 grams of N-aminopiperidine according to the procedure described in Example 10 there is obtained 1-(5: indansulfonyl)-3-(1-piperidyl)urea, M.P. 191-192".

EXAMPLE 3- 1-(2,3-Dihydr0-6-Thionaphthenesulfonyl)-3- (J-Piperidyl) Urea (A) PREPARATION OF ETHYL 2,3DIHYDRO-6-THIO- NAPHTHENESULFONYL CARBAMATE To a mixture of 21.5 grams of 2,3-dihydro-6-thionaphthenesultonamide, 13.8 grams of anhydrous potassium carbonate and 200 ml. of dry acetone there is added slowly 13.7 grams of ethyl chlorocarbonate. The resulting mixture is refluxed with vigorous stirring for twenty hours, cooled and filtered. The solid is dissolved in water and carefully acidified to give ethyl 2,3-dihydro-6-thionaphthenesulfonylcarbamate, M.P. 106-108".

(B) PREPARATION OF 1-( 2,3-DIHYDRO-6-THIONAPH- THENESULFONYL-3-(1-PIPERIDYL)UREA By reacting 14.4 grams of ethyl 2,3-dihydro-6-thionaphthenesulfonylcarbamate with 5.0 grams of N-aminopiperidine according to the procedure described in 1C there is obtained 1-(2,3-dihydro-6-thionaphthenesulfonyl)-3-(l-piperidyl)urea, melting at 194-196".

EXAMPLE 4 1-(6-Cumaransulf0nyl) -3-(1-Piperidyl) Urea (A) PREPARATION OF ETI-IYL (i-CUMARANSULFONYL- CARBAMATE By reacting 19.9 grams of 6-cumaransulfonamide with 13.7 grams of ethyl chlorocarbamate as in Example 3A, there is obtained ethyl 6-cumaransulfonylcarbamate, M.P. -127".

(B) PREPARATION OF 1-(6-CUMARANSULFONYL)- 3- l-PIPERIDYL) UREA By reacting 13.6 grams of ethyl 6-cumaransulfonylcarbamate with 5.0 grams of N-aminopiperidine according to the procedure described in IQ there is obtained 1-(6- cumaransulfonyl)-3-(1-piperidyl)urea, M.P. 195-1965.

EXAMPLE 5 1-(4-Indansulfonyl) -3- (4-Methyl-1-Piperazz'nyl) Urea (a) A solution of 1 9.8 g. of 4-indansulfonic acid, 20 ml. of thionyl chloride and 1.0 ml. of N,'N-dimethylformamide, is refluxed for three hours and concentrated in vacuo to remove the excess of thionyl chloride. The residue, consisting of 4-indansulfonyl-4 sulfonyl chloride, is dissolved in ether and added slowly to 100 ml. of concentrated aqueous ammonia, with external cooling. The solid which forms is filtered and washed with water to give 4-indansulfonamide.

(b) To 19.7 g. of 4-indansulfonamide, 13.8 g. of anhy drous potassium carbonate, and 200 ml. of dry acetone is added slowly 13.7 g. of ethyl chlorocarbonate. The resulting mixture is stirred and refluxed overnight, cooled and the solid filtered. The solid is dissolved in water and carefully acidified to give ethyl 4-indansulfonylcarbamate.

(0) By reacting 24 grams of ethyl 4-indansulfonylcarbam-atewith 11.5 grams of l-amino-4-methylpiperidine according to the procedure described in Example 1C there is obtained 1- (4-indansulfonyl)-3-(4-methyl-l-piperazinyl)urea.

EXAMPLE 6 (a) 16.1 g. of N-acetylindoline are introduced with stirring into 58.5 g. of chlorosulfonic acid. The mixture is stirred for two hours at 60, and after cooling, it is poured onto ice. The precipitated sulfionyl chloride is filtered with suction andthe product washed with Water. 22.6 g. of product are obtained which is recrystallized from benzene, M.P. 172-173".

(b) 16.1 g. of the 1-acetyl-5-indolinesulfonyl chloride are introduced into 900 ml. of approximately aqueous ammonia water and stirred for three hours at room temperature. At the end of the reaction, the product is filtered with suction, dissolved in dilute sodium hydroxide solution, the solution is treated with activated charcoal, filtered and the filtrate acidified with dilute acetic acid. 18.4 g. of l-acetyl5-indolinesulfonamide are obtained which is recrystallized from 80% alcohol, M.P. 228-229".

(0) The 1-acetyl 5-indolinesulfonamide obtained above is hydrolyzed with sodium hydroxide solution to obtain the free 5-indolinesulfonamide (M.P. 163165). 2 g. of S-indolinesulfonamide are boiled under reflux with 2.5 g. of chloranil in 30 ml. of ethylene glycol dimethyl ether for 30 minutes. The solvent is distilled oil under vacuum and the residue is triturated with water and filtered. The product is dried and triturated-With ether to obtain 1.8 g. of S-indolesulfonamide, which is recrystallized from acetone, M.P. 208".

(d) Preparation of ethyl 5-indolesulfi0nylcarbamate. By reacting 19.6 grams of S-indolsulfonarnide with 13.7 grams of ethyl chlorocarbonate as in Example 3A there is obtained ethyl 5-indolesulfonylcarbamate.

(e) Preparation of .I-(S-indolesalfonyl)-3-(4-morph0- lz'nlo)urea.-By reacting 13.5 grams of ethyl S-indolesulfonylcarbamate with 5.2 grams of 4-arninornorpholine according to the procedure described in IQ there is ob tained 1-(5-indolesulfonyl) -3- (4-morpholino) urea.

EXAMPLE 7 1(6-Ind0linesulfonyl) -3- (Benzylmethylamine) Urea (a) 175 grams of 4-(B-chloroethyl)benzenesulfonyl chloride (M.P. 54-56") is added gradually with vigorous stirring at to to a mixture of 280 grams of anhydrous potassium nitrate and 420 grams'of concentrated is filtered under suction and is Washed with Water. The damp filtrate residue is introduced with vigorous stirring into an ice cooled mixture of 600 ml. of concentrated ammonia and 600 ml. of water and stirred for another 3 hours. The product, 3-nitro-4-(B-chloroethyl)benzenesulfonamide, is filtered under suction. After drying, 168 grams of crude product are obtained Which'have a melting point of 165-166". After recrystallization from ethyl acetate, the M1. is 166167. l

(b) 26 grams of 3-nitro-4-(fl-chloroethyhbenzenesulfonamide are suspended in 200 ml. of ethyl acetate and, after the addition of Raney nickel catalyst, are hydrogenated at normal pressure and room temperature until no more hydrogen is taken up. Over a period of 60 minutes, 7.4 liters of hydrogen are taken up. The catalyst is then separated by filtration and the solvent is completely distilled off in vacuo. The residue is dissolved in 600 ml. of 0.5 N sodium hydroxide solution and heated on a boiling water bath for one hour. After cooling, the solution is treated with activated charcoal, filtered and the product 6-indolinesulfionamide, precipitated with dilute acetic acid. 16.6 grams with a MP. of 169 are obtained. The product may also be recrystallized from dilute ethanol without changing the melting point.

(0) Preparation of ethyl 6-indolinesulfonylcarbamate-By reacting 19.8 of 6-indolinesulfonamide with 13.7 grams of ethyl chlorocarbonate as in Example 3A there is obtained ethyl 6-indolinesulfonylcarbamate.

(d) Preparation of 1-(6-ind0linesulf0nyl) -3-(benzylmezhylamino)area.'By reacting 13.7 grams of ethyl 6-indolinesulfonylcarbamate with 6.8 grams of N-benzyl- N-methylhydrazine according to the procedure described in 10 there is obtained l-(6-indolinesulfonyl)-3-(benzylmethylamhro)urea.

EXAMPLE 8 V J -(.1-Acetyl-5-Ind0linesalfonyl) -3- (2,5-Dimethyl- 1 -Pyrr0lz'dinyl) Urea (A) PREPARATION OF ETHYL 1-ACETYL-5-INDOLINE- SULFONYLCARBAMATE By reacting 24 grams of 1-acetYl-S-indolinesulfonamide, as prepared in Example 6]; with 13.7 grams of ethyl chlorocarbonate as in Example 3A there is. ob-

tained ethyl 1-acetyl-5-indolinesuifonylcarbamate.

(B) PREPARATION OF 1-(l-ACETYL-fi-INDOLINESUL- FONYL) -3- 2,5-DIMETHYL-l-PYRROLIDINYL) UREA By reacting 15.6 grams of ethyl l-acetyl-S-indolinesultonylcarbamate with 5.7 grams of l-amino-2,5-dimethylpyrrolidine according to the procedure described in 1C there is obtained 1-(1-acetyl-S-indolinesulfonyl)-3#(2,51 dimethyl-l-pyrrolidinyDurea.

EXAMPLE 9 J-(S-Indansulfonyl) -3-(1-Piperidyl) Urea 2.4 grams of .5-indansulfonylurea obtained by the reaction of ethyl S-indansulfonylcarbamate with alcoholic ammonia and 1.1 grams of N-aminopiperidine 'are' triturated. The mixture is heated on a boiling bath, under water vacuum. The glassy residue is then triturated with Water and after a while the product which crystallizes is filtered under vacuum. The product, 1-(5-indansulfonyl)- 3-(1-piperidyl)urea, is recrystallized from methanol, MP. 187-190.

EXAMPLE 10 1 -(5-Indansulf0nyl) -3- (1 -Piperidyl) Urea 24 grams of S-indansul-fonylurea and 11 grams of N- amiuopiperidine in ml. of chlorobenzene are refluxed for 15 minutes. There is an evolution of amine and a clear solution results. The chlorobenzene is distilled off in vacuo and the residue is dried, triturated with water and filtered under suction. The product 1-(5- indansulfonyl)-3-(l-piperidyDurea is crystallized from methanol, M.P. 189-l91.

. EXAMPLE 11 I -lwdansulfonyl -3-(2,6-Dimethyl-1 -Piperidyl) Urea (A) PREPARATION OF E-INDANSULFONYLISOCYANATE A solution of 197 grams of 5-indansulfonamide in 600 ml. of trichlorobenzene is heated to reflux and a stream of phosgene passed through the boiling solution until the reaction is completed. The reaction is completed when the exit gas no longer contains hydrogen chloride. The solvent is then removed under reduced pressure and the residue fractionally distilled under reduced pressure to yield the desired 5-indansulfonylisocyanate.

(B) PREPARATION OF 1-(5-INDANSULFONYL)-3- (2,G-DIMETHYIrl-PIPERIDYL) UREA To a cooled solution of 22.3 grams of S-indansulfonylisocyanate in 250 ml. of anhydrous ether there is added slowly a solution of 12.8 grams of 2,6-dimethyl-1-arninopiperidine in 50 ml. of anhydrous ether. After the addition is complete, the reaction mixture is refluxed for two hours and the precipitated 1-(5-indansulfonyl)-3-(2,6-dimet-hyl-l-piperidyDurea recovered by filtration. An additional quantity of product is obtained by concentration of the solvent. The product may be crystallized from ethanol.

EXAMPLE 12 1-(5-Indansulf0nyl)-3-(3-Meth0xy-1-Piperidyl) Urea (A) PREPARATION OF 3-l\IETHOXY-1-NITROSOPIPERI- DINE Following the procedure of Example 1A but substituting 57 grams of 3-methoxypiperidine for the hexamethyleneimine, there is obtained 3-methoxy-1-nitrosopiperidine.

(B) PREPARATION OF 1-AMINO-3-METHOXYPIPERL DINE Following the procedure of Example 1B but substituting 48 grams of S-rnethoxy-l-nitrosopiperidine for the N- aminohexamethyleneimine, there is obtained l-amino-S- methoxypiperidine.

c PREPARATION OF 1-(5-INDANSULFONYL)-3-(3- METHOXY-l-PIPERIDYL) UREA Following the procedure of Example 1C but substituting 13.0 grams of 1amino-3-methoxy-piperidine for the N-aminohexamethyleneimine there is obtained 1-(5 -indansulfonyl -3( 3-methoxyl-piperidyl urea.

EXAMPLE 13 I-(S-findansulfonyl -3- (4-H0mom0rpholinyl) Urea (A) PREPARATION OF A-NITROSOHOMOMORPHOLINE Following the procedure of Example 1A but substituting 50.5 grams of homomorpholine for the hexamethyleneimine, there is obtained 4-nitrosohomomorpholine.

(B) PREPARATION OF 4-AMINOHOMOMORPHOLINE Following the procedure of Example 13 but substituting 43.3 grams of 4-nitrosohornomorpholine for the N- nitrosohexamethyleneimine there is obtained 4-aminohomomorpholine.

(C) PREPARATION OF 1-(5-INDANSULFONYL)-3- (l-HO MOMORPHO LINYL) UREA Following the procedure of Example 1C but substituting 11.6 grams of 4-aminohomornorpholine for the N- aminohexamethyleneimine there is obtained I-(S-indansulfonyl -3 (4-homomorpholinyl) urea.

EXAMPLE 14 1 (2-3 -D ihydr0-6 -Thi0naph thenesulfonyl -3 (4-M ethyl-1 -H omopiperazinyl Urea (A) PREPARATION OF 1-METHYL4-NITRO SOHOMO- PIPERAZINE Following the procedure of Example 1A but substituting 57 grams of l-methylhomopiperazine for the hexamethyleneimine, there is obtained 1-methyl-4-nitrosoliomopiperazine.

8 (B) PREPARATION OF l-AMINO-A-METHYLHOMO- PIPERAZINE Following the procedure of Example 1B but substituting 48 grams of 1-methyl-4-nitr0sohomopiperazine for the N-nitrosohexamethyleneimine there is obtained 1- amino-4-methylhomopiperazine.

(C) PREPARATION OF 1-(2,3-DIHYDRO-6-THIONAPH- THENESULFONYL)- 3 44 METHYL-l-HOMOPIPERAZI- NYL)UREA Following the procedure of Example 33 but substituting 6.5 grams of 1-amino-4-methyl homopiperazine for the N-aminopiperidine there is obtained 1-(2,3-dihydro- 6 thionaphthenesulfonyl) 3 (4 methyl 1 homopiperazinyl) urea.

EXAMPLE 15 Z (6-Cumaransulfonyl) -3-(4-Thiam0rpholinyl Urea (A) PREPARATION OF 4 NITROSOT1IIAMORPHOLINE Following the procedure of Example 1A but substituting 52 grams of thiamorpholine (for the hexamethyleneimine there is obtained 4-nitrosothiamorpholine.

(B) PREPARATION OF 4-AMINOTHIA1WIORPHOLINE Following the procedure of Example 1A but substituting 41 grams of 4-nitrosothiamorpholine for the N'nitrosohexamethyleneimine, there is obtained 4-aminothiamorpholine.

(C) PREPARATION OF 1-(6-CUMARANSULFONYL)-3- (A-THIAMORPHOLINYL) UREA Following the procedure of Example 4B but substituting 5.9 grams of 4-arninothiamorpholine for the N-arninopiperidine there is obtained l-(6-cumaransulfonyl)-3-(4- thiamorpholinyl)urea.

EXAMPLE 16 I-(S-Indansulfonyl)-3-(2,3-Dimethyl-4- Thiamorpholinyl) Urea (A) PREPARATION OF 2,3-DIMETHYL-4-NITROSOTHIA- MORPHOLINE Following the procedure of Example 1A but substituting 66 grams of 2,3-dimethylthiamorpholine for the hexamethyleneimine there is obtained. 2,3-dimethyl-4-nitrosothiarnoipholine.

(B) PREPARATION OF 4-AMINO-2,3-DIMETHYL- THIAMORPHOLINE Following the procedure of Example 1B but substituting 53.3 grams of 2,3-dimethyl-4-nitrosothiamorpholine for the N-nitrosohexamethyleneimine there is obtained 4-amino-2,3-dimethylthiamorpholine.

(C) PREPARATION OF 1-(5-INDANSULFONYL)-3-(2,3-

DIMETHYL-4-THIAMORPHOLINYL)UREA Following the procedure of Example IC but substituting 14.6 grams of 4-amino-2,3-dimethylthiamorpholine for the N-aminohexamethyleneimine there is obtained 1-(5-indansulfonyl) 3 (2,3-dimethyl-4-thiamorpholinyl)urea.

EXAMPLE 17 1-(4-L'1dansulf0nyl) -3- (3-Methyl-1-Pyrr0lidinyl) Urea (A) PREPARATION OF 3-METHYL-1-NITROSOPYR- ROLIDINE Following the procedure of Example 1A but substituting 42.5 grams of 3-methy1pyrrolidine for the hexamethyleneimine, there is obtained 3-methyl-l-nitrosopyrrolidine.

(B) PREPARATION OF 1-AMINO-3-METI-IYLPYR- ROLIDINE Following the procedure of Example 1B but substituting 38 grams of 3-methyl-l-nitrosopyrrolidine for the N-nitrosohexamethyleneimine, there is obtained l-amino- 3-methylpyrrolidine.

(C) PREPARATION OF l-(4-INDANSULFONYL)-3-(3- METHYL-l-PYRROLIDINYL)UREA Following the procedure of Example 5C but substituting 10 grams of 1-amino-3-methylpyrrolidine for the 1- 9 amino-4-methylpiperazine there is obtained l-(4-indansulfonyl) -3- 3 -methyl- 1 -pyrro1idinyl) urea.

EXAMPLE 18 I 5 -I ndansul fonyl -3 Dimethylamino) Urea Following the procedure of Example but substituting 6.0 grams of dimethylhydrazine for the N-aminohexamethyleneimine, there is obtained 1-(5-indansulfonyl)-3- (dimethylamino)urea.

EXAMPLE 1 9 1 5 Jndansulfonyl -3- 2,2'-Dihydroxydiethylamino) Urea Following the procedure of Example 1C but substituting 12 grams of 2,2'-dihydroXydiethylamine for the N- aminohexamethyleneimine there is obtained l-(S-indansulfonyl) -3- 2,2-dihydroxydiethylamino) urea.

EXAMPLE 1-(5-Indansulfonyl)-3-('1-Hexahydr0azepinyl) Urea Hydrochloride A solution of 3.37 grams of 1-(5-indansulfonyl)-3-(1- hexahydroazepinyDurea in absolute alcohol is cooled and treated with 10 ml. of a 1 N ethereal hydrogen chloride solution. Anhydrous ether is then added to complete the precipitation of the salt. The solid is filtered, washed thoroughly with anhydrous ether and air dried to give the desired 1- S-indansulfonyl -3-( l-hexahydroazepinyl) urea hydrochloride.

EXAMPLE 21 I-(S-Indansulfonyl) -3-(1-Piperidyl) Urea T artrate A solution of 3.23 grams of I-(S-indansulfonyl-S-(lpiperidyl)urea in absolute alcohol is treated with a solution of 0.75 gram of tartaricacid in absolute alcohol. The solvent is removed under reduced pressure and the residue washed thoroughly with ether to give the desired l- S-indansulfonyl) 3-( l-piperidyl) urea tartrate.

What is claimed is:

1. A compound selected from the group consisting of sulfonylureas of the formula wherein X is a member of the group consisting of CH NCO(loWer alkyl), NH, O, and S; R and R each represents a member of the group consisting of lower alkyl, hydroxy-lower alkyl and phenyllower alkyl; and R and R together represent a member of the group consisting of tetramethylene, pentamethylene, hexamethylene, oxatetrarnethylene, 'oxapentamethyleue, oxahexamethylene, azatetramethylene, .azapentamethylene, azahexamethylene, thiatetramethylene, thiapenta-methylene and thiahexamethylene, and physiologically acceptable acid addition salts of said sulfonylureas.

2. A compound of the formula HaC I s O2NHO O-NHN H20 I wherein R and R each represents a member of the group consisting of lower alkyl, hydroxy-lower alkyl, and phenyl-lower alkyl, and R and R together represent a member of the group consisting of tetrarnethylene, pentamethylene, hexamethylene, oxatetramethylene, oxapentamethylene, oxahexamethylene, azatetramethylene, azapentamethylene, azahexamethylene, thiatetramethylene, thiapentamethylene, and thiahexamethylene.

3. A compound of the formula wherein R and R each represents a member of the group consisting of lower alkyl, hydroxy-lower alkyl and phenyl-lower alkyl, and R and R together represent a member of The group consisting of tetramethylene, pentamethylene, hexamethylene, oxatetramethylene, oxapentamethylene, oxahexamethylene, azatetramethylene, azapeutamethylene, azahexamethylene, thiatetramethylene, thiapentamethylene and thiahexamethylene.

4. A compound of the formula ll no wherein R and R each represents a member of the group consisting of lower alkyl, hydroXy-lower alkyl and phenyl-lower alkyl, and R and R together represent a member of the group consisting of tetrarnethylene, pentamethy-lene, hexamethylene, oxatetramethylene, oxapentamethylene, oxahexamethylene; azatetramethylene, azapentamethylene, azahexamethylene, thiatetramethylene, thiapentamethylene and thiahexamethylene.

5. A compound of the formula References Cited in the file of this patent UNITED STATES PATENTS Wright Nov. 13, 1962 OTHER REFERENCES Haack: Arzn. Forsoh, volume 8, No. 7a, pages 444- 448 1958).

Dulin et al.: Proceedings of the Society for Experimental Biology and Medicine, volume 107, pages 245- 248 (1961). 

1. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFONYLUREAS OF THE FORMULA 